Automatically threading loom shuttle



A. HANNAH Dec. 29, 1931.

AUTOMATICALLY THREADING LOOM SHUTTLE" Original Filed Nov. 20, 1929 2 Sheets-Sheet l f RN wk 1 m mm m8. mm. mm"

Dec. 29, 1931. A HANNAH 9 AUTOMATICALLY THREADING LOOM SHUTTLE Original-Filed Nov. 20, 1929 2 Sheets-Sheet 2 A TTORNEY Patented Dec. 29, 1931' entree SrresPareNT OFFICE g ALEXANDER HA NAH, on PATERKSOIN, New JERSEY, ASS-IGNOR T0 DRAPER coRPoRA TIO1\T,OF I-IIOPEDALE, nessacnosnrrs, A oonrona'rron or MAINE AUToMArIcaLLY TnnnAmno LOOM SHUTTLE Application filed November 20, 1929, Serial No. 408,584. Renewed October 24, 1931.

This invention "relates to automatically tl'ireading loom shuttles and is more particu-- larly' directed to the .tensioning device to impart tension to the thread as it moves.

through the shed. l

in filling. replenishing 'looms where the filling in the shuttl is replenished irom time to time, it is desirable that the incoming filling thread shall haveimparted thereto the same characterof tension on the first pick of the shuttle following replenishment as exists in subsequent weaving, otherwise imperfect cloth is liable to result. Attempts have been made heretofore to solve thisproblem by utilizing the swirling actionof the thread to cause it to pass into control of the tensioning device on the first pick of the shuttle following replenishment, and while such devices have operated with fair satisfaction, the unreliability of dependence upon the snarling action or the thread has not al= ways insured that the incoming thread shall be subjected'to the samefltension on the first.

pick of the'shuttle following replenishment as exists during subsequent weaving.

One. of the objects of the present invention, therefore, is to provide thread tensioning members in the shuttle between the bobbin chamber and .slde dellvery eye and to mount .meh tensioning members so that; onreplenishment of filling they shall be moved out of thread tensioning positionto free the outgoing filling end and to receive theincommg filling in operative relation with-the tensioningmembers, and inasmuch as the same tons on should be placed .upon the incoming iii .ng thread on the first pick following re plemshment as exists in subsequent weaving,

the present invention provides that before,

the shuttle is entirely moved fromthe replen ishing shuttle box, the tensioningmembers shall be moved into thread tensioning positi on, to thereby exert tension upon the thread as the shuttle passes through the shed on the ment. l

The inventlon will bestbe made clear from the following In the drawings Fig. lis a perspectlve view of someof the loom parts and a shuttle provided withthe present invention, some of the parts being broken away;

Fi 2 is a longitudinal sectional elevation of part of the shuttle and the relation of:

parts as the shuttle is moved from the reing broken away, and showing the position i of parts following replenishment, with the g shuttle being picked from thereplenishing box; and r Fig. 5 is a section on the line 55 of Fig. 3. The shuttle 1 is provided with the usual bobbin chamber and the side delivery eye 3, and frontward of the bobbin chamber the shuttle is provided with an automatically threading block 4 which may be of usual character, so that as the shuttle is picked.

following replenishment, the incoming and as the shuttle passes through the shed,

apply the necessary tension to the thread. One of said tensioning members, in the pres- .ent instance of the invention, comprises the v press-members 5 which extend transversely between the bobbin 7 thread a may pass into control of the thread=- a ing block and on the return ofthe shuttle becomes of the opening 6 in the shuttle, and are se cured to theside walls of said opening. The

other tensioning member comprises the mov- ,able tines 7 which are mountedin the shuttle ,formovement to and from thread tenslonmg position, and as one convenient metho'dof securing the movable tensioning members in nrs pick of the shuttle following replenish-w the shuttle, the latter is provided with a" w a bracket 8 which may be secured to the thread-- and novel features thereof ing block 4 by means of a securing device a such as the screw 9. downwardly extending portion and a lower or bottom portion 10 at the terminal end of The bracket 8 has a which is an upwardly extending part 11, and between the two members of the brackets 8 and 11 there is mounted a rod or shaft 12 which supports a sleeve 13 from which extend the movable tensioning members 7 which are arranged in alternate relation with the tensioning members 5.

The movable tensioning member carrying the tines 7 is normally under the influence )f yielding means which serves to yieldingly hold the movable tensioning members in thread tensioning relation with respect to the companion tensioning member, and in the present instance of the invention, such yielding means may be conveniently formed as a strip of rubber 1%, Fig. 5, one end of which is securedto the sleeve 13, as at 15, and the other end of which engages a screw or bolt 16 mounted-in the opposite wall of the thread passage, the construction being such that upon adjustment of the bolt or screw 16 the stress of the yielding device or rubber band 14 may be varied.

As shown in the present instance of the invention, the movable tensioning member '7 may be formed with hook portions 17 which, when the movable tensioning member is in thread tensioning relation with the companion tensioning member, causes the thread a to be. deflected alternately over and under the fixed and movable tensioning members, as indicated in Fig. 4, which shows the relation of-parts with the tensioning members in operative thread tensioning relation.

To insure that the thread a shall not pass from control of the tensioning members when they are in thread tensioning relation, thezwall of the recess 6 opposite the wall adjacent which the movable tensioning member is mounted, is provided with a series of sockets or openings 18 into which the end portions of thezmovable tensioning members extend when the tensioning members are in thread tensioning relation, thus, during weaving, with the parts related as stated, the thread cannot escape from the tensioning effect of the tensioning members.

Pivotally mounted frontward of the bOlM bin chamber on the stud or pin 19 is a corn troller 20 having a frontwardly extending tongue 21, which as more clearly shown in Fig. 5, underlies the movable tensioning members 7, with the result that should the con troller 20 be rocked about its pivotal mounting, as indicated in Figs. land 2, the movable tcnsioning members 7 will be turned about their pivotal mounting at one side of the opening 6, thereby placing the two tensioning members relatively in non-thread tensioning position. The construction is such that the incoming thread a may, on replenishment of filling, be positioned operatively with respect to the two tensioning members and no obstruction is presented to the incoming thread taking such position.

As hereinbefore suggested, it is desirable that the incoming thread be subjected to the tensioning effect of the tensioning members as the shuttle is picked, and preferably before the shuttle leaves the filling replenishing box. The controller, therefore, is provided with a heel or cam 22 which underlies the end of the outgoing bobbin 23 as the incoming bobbin 2a ejects it from the shuttle, with the result that the controller will be tilted or moved into position to move the tensioning members from their thread tensioning position. From the construction thus far described it will be apparent that during normal Weaving operation between replenishments of filling, the thread will be subjected to a slip grip friction between the two tensioning members, as illustrated in Fig. 4,. and on replenishment of filling that the outgoing filling carrier 23 will move the controller 20 to cause the tensioning members to assume a position of non-thread tensioning, as indicated in Fig. 2, and thus free the longitudinal passage of the shuttle for the incoming thread to pass into operative relation with the tensioning members.

The filling replenishing shuttle box in a filling replenishing loom is provided with an opening 25 in the bottom portion thereof and when the outgoing filling carrier moves the controller to separate the tensioning members, the cam portion 22 thereof is depressed into the opening 25 of the shuttle box, with the result that when the shuttle is picked from the replenishing box by the picker 26, as indicated in Fig. 1, the cam portion 22 thereof will strike the end portion 27 of the box opening and cause the controller to again move to its normal position, as indicated in Fig. 4. The cam 22, therefore, acts as. a trip for the controller to permit the tensioning members to be moved into their thread tensioning position before the shuttle has passed entirely from the replenishing shuttle box.

In some instances it may be desirable to provide a yielding device to maintain the controller 20 in the position indicated in Fig. 2 after it has separated the thread tensioning members for the entrance of the new filling into operative relation therewith, and in the present instance of the invention such yielding device comprises an arm 28 which may be conveniently mounted on one of the fixed tensioning members 5 at one side of the tongue 21 of the controller, and a spring 29 may act upon the yielding device 28 to cause it to frict-ionally engage the tongue 21 when the latter is in its raised posit-ion, as indicated in Figs. 1, 2, thereby insuring that the thread tensioning members shall be maintained in non-tensioning relation until the controller is tripped as hereinbefore described.

The yielding device 28 is preferably outnesaaea turned at its upper end 30 and'engages a slot 31 formed in the shuttle wood or other part, to prevent the holder from catching upon the incoming or outgoing thread.

WVhile the tensioning members may be constructed as hereinbefore described, it is evident that they may be varied, the essentials in this respect bein that they may be relatively moved out of thread tensioning position on replenishment of filling and be moved into thread tensioning position to exert tension on the incoming filling a before the" shuttle entirely leaves the replenishin box. 7

iiince the contact of the cam portion 22 of the controller against the wall 27 of the slotted bottom of the shuttle box is somewhat impulsive due to the pick of the shuttle, a stop 32 may be provided to engage the controller, as indicated in Figs. 2 and 4, as the controller is movedinto its normal position.

The transferrer 33 having the bobbin tip engaging portion 34 ma be of usual construction and be operate as usual to transfer a fresh supply of filling to the shuttle when that previously in the shuttle has reached a predetermined degree of exhaustion.

From the construction described as one good practical form of the invention it will be noted that on replenishment of filling the controller 20 will be actuated to relatively move the tensioning members from thread tensioning position to permit the new filling to pass into position for control of the tensioning members and that the controller will be maintained in this position by the yielding holder 28 until replenishment has been completed, and that thereupon the cam portion 22 of the controller will engage the shuttle box before the shuttle leaves the box, thereby permitting the tensioning members to assume their thread tensioning position i and impart tension to the incoming thread as the shuttle passes through the shed so that the incoming thread is effectively tensioned on the first pick of the shuttle following replenishment.

What is claimed is:

1. An automatically threading loom shuttle having a bobbin chamber and side demoving said members out of thread tensioning relation, yielding means for causing the thread tensioning members to be moved relatively into thread tensioning position and a trip adapted to engage a part of the shuttle box for freeing the tensioning members to the action of said yielding means as the shuttle is may be tensioned by the tensioning members throughout the first pick of the shuttle following replenishment of filling.

0'2. An automatically threading loom shuttle having coacting thread tensioning members, yielding means normally acting to hold the tensioning members relatively in thread tensioning position as the shuttle passes through the shed, a-device actuated by the outgoing bobbin 011 replenishment of filling for moving the tensioning members relatively from thread tensioning relation and having a part which extends below and engages the shuttle box as the shuttle is picked for tripping said device that the tensioning members may move into thread tensioning relation under the influence of said yielding means and apply tension to the thread throughout the first movement of the shuttle through the shed.

3.-An automatically threading loom shuttle having coacting thread tensioning mem from thread tensioning relation that the incoming thread may be positioned for engagement by the tensioning members when they are moved again into thread tensioning relati on, and a cam portion connected to said device for engagement with the shuttle box as the shuttle is picked for tripping said device to permit the tensioning members to move into thread'tension'ing position that the incoming thread may be tensioned throughout the first pick following replenishment.

4. An automatically threading loom shut-- tle having coactingithread tensioning members, yielding means normally acting to hold the tensioning members relatively in thread tensioning relation. as the shuttle passes through the shed, a device actuated on replenishment of filling for moving the tensioning members from thread tensioning relation, and a trip connected to said device and projected into the open bottom of the replenishing shuttle box on replenishment of filling that it mayengage the bottom Wall of the shuttle box as the shuttle is picked and trip said device to permit the tensioning members to move relatively to tensioning position andapply tension to the incoming thread on the first pick following replenishment of filling. 1

5. An automatically threading loom shuttle having bobbin chamber and side delivery eye, coacting thread tensioning members to' exert a slip grip tension on the thread as the shuttle passes through the shed and mounted for relative movement into and out of thread tensionin g relation, trip means actuated on replenishment of filling for relatlvely movlng and members out of thread tensiomng relation to permit the incoming thread to be positioned for engagement by the tensioning members when they are again moved relative- 1y into thread tensioning relation, a yielding hold device mounted on the shuttle to act upon and hold said means when it has moved the tensioning members relatively from tensioning relation, and a cam portion carried by said trip means and extending below the shuttle box to engage the box and positively re- ;turn the trip means to initial position as the shuttle is picked.

6. An automatically threading loom shuttle having thread tensioning members for applying tension to the thread during weaving and mounted for movement into and out of thread tensioning relation, yielding means normally acting to move the members relatively into tensioning position, a device actuated on replenislnnent of filling for moving the tension members relatively from tensioning members to the action of said thread tensioning position and a trip am which is projected below the shuttle as said device is actuated, so that as the shuttle is; picked the trip cam will trip said device from control of the tensioning members to permit the tensioning members to apply tension to the thread on the first pick of the shuttle following replenishment.

7. An automatically threading loom T1 shuttle having thread tensioning members to tension the thread as it is delivered from the shuttle during weaving and mounted for relative movement into and out of thread tensioning relation, means actuated on replenishment of filling for relatively moving said members out of thread tensioning relation, yielding means for causing the thread tensioning members to be moved into thread tensioning relation, and a trip for freeing the yielding means by movement of the shuttle as itis picked and before it leaves the replenish ing shuttle box that the incoming thread may Y be tensioned by the tensioning members on the first pick of the shuttle following replenishment of filling.

8. An automatically threading loom shuttle having coacting thread tensioning members, yielding means normally acting to I may move into thread tensioning relation.

9. An automatically threading loom shuttle having coacting thread tensioning members, yielding means normally acting to hold the tensioning members relatively in thread tensioning position as the shuttle is picked, a device actuated during replenishment of filling for moving the tensioning members relatively from thread tensioning relation for freeing the old filling and reeeiving the incoming filling, and a trip actuated by'a part of the shuttle box as the shuttle is picked for tripping said device that the tensioning members may move relatively into thread tensioning relation.

10. An automatically threading loom shuttle having eoacting thread tensioning members, yielding means normally acting to hold the tensionin g members in thread tensioning relation the shuttle passes through the shed, a device actuated on replenishment of filling for moving the tensioning members relatively from thread tensioning position and holding them in such relation until the shuttle is again picked, and a trip actuated to trip said device before the replenished shuttle leaves the replenishing shuttle box that the tensioning members may move into thread tensioning relation to place tension on the new thread throughout the first pick of the shuttle follmving replenishment.

In testimony whereof, I have signed my name to this specification.

ALEXANDER HANNAH. 

